CRIM 355 Chapter Notes - Chapter 14: Precipitin, Luminol, Blood Residue
18 Apr 2017
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Document Summary
Deoxyribonucleic acid (dna): molecules carrying the body"s genetic information (double stranded in the shape of a double helix) Blood: highly complex mixture of cells, enzymes, proteins, and inorganic substances. Plasma: fluid portion of unclotted blood consists of water and accounts for 55% of blood content. Contains red blood cells (erythrocytes), white blood cells, and platelets. Solid portion of blood account for 45% of its content. Blood clots when fibrin (protein in plasma) traps and enmeshes the red blood cells. Antigen: substance (usually a protein) that stimulates the body to produce antibodies against it. Impart blood type characteristics to the red blood cells + grouped into systems depending on their relationship to one another. A-b-o + rh systems = most important blood antigen systems. The presence/absence of the a and b antigens determines a person"s blood type in the a-b-o system. For every antigen, there is a specific antibody.
